Improvement in flood-gates



ittz Strict tant effin.

AUGUST ,HQ'ADAMs'or PIQUA, OHIO.

Letters Patent No. 113,001, dated March 28,1871.

IMPROV-E-ME-NT IN FLOOD-GATES.

The -Scheule rierred'to in these ,Letten Patent and making part of the same.

To all lwhom 'it may conce/ra:

Be it known that I, AUGUST H. ADAMS, of Piqua, in the county of Miami and State of Ohio, have invented a new and useful Improved Flood-Grate; and

1 do hereby declare that the following is a full, clear,

and exact description thereof, sncient to enable those skilled in the art to which myinvention appertains to make and use the same, reference being had to the accompanying drawing making part of this specification and to the letters and figures marked thereon.

' '1 he nature of my invention consists in the peculiar construction and arrangement of parts, as here- @ver each of these pulleys passes a chain or cord,

E, one end of which is attached to the upper section of the gate, and the other end to a weight, F.

At the bottom o'f the standards O '0, andformed so as to t loosely around them, are floats G G. Above these oats are two other oats, H H, having projecting bars, I I, in which are journaled rollers or pulleys, K K. l Under each of the pulleys K K passes a chain or cord, L L, one end-of which is attached to the lower side of the upper section of the gate, andthe other end is fastened to the standard 0 The weights F F are heavier than the sections A and B; but the combined weight of the sections A and B and the floats H H is greater than that of the weights F F.

As the water rises, the floatsG G will bear up the floats H H, and the weights F F will descend, causing the gate A` B to rise. As the water falls, the

weight of the floats H H, added to that of the gate A A B, will cause the gate to descend to its former' position.

lhe lower floats G Gr serve to keep the upper ones H H out of the water, and thus prevent 'their being frozen down in winter. Should the lower iioats become frozen down, the upper ones will then be oper? ated upon by the water.

` What I claim as new, and desire to secure by Letters Patent, is-

A flood-gate, .provided with two. or more sets oi' floats, constructed and operatin g substantially as shown and described.

- AUGUST H. ADAMS. Witnesses:

J. F. MGKINNEY, S. S. MCKINNEY. 

